CN217422336U

CN217422336U - Self-balancing gas pressure regulator

Info

Publication number: CN217422336U
Application number: CN202221379078.5U
Authority: CN
Inventors: 刘海珠
Original assignee: Suzhou Liantong Energy Technology Co ltd
Current assignee: Suzhou Liantong Energy Technology Co ltd
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-09-13
Anticipated expiration: 2032-06-06

Abstract

The utility model provides a gas pressure regulator of self-balancing formula in gas engineering technical field, its characterized in that, including valve casing, diaphragm link gear, self-balancing mechanism, pressure signal feedback mechanism, the valve casing includes casing, lower casing, valve body, and diaphragm link gear includes rupture membrane, working film, compensation membrane, diaphragm disc, and self-balancing mechanism includes adjustment mechanism, spring holder, case subassembly, base, and pressure signal feedback mechanism includes pressure balance pipe. The utility model discloses in, the pressure change in space behind the valve produces the effect to the diaphragm through pressure signal feedback mechanism, and this effort passes through the diaphragm and drives balance mechanism and counterbalance with the spring force, and the gas pressure of diaphragm is expected to close the valve, and spring pressure then is expected to open the valve, finally reaches balanced state, realizes the effect of automatically regulated gas pressure in the air supply line. The utility model discloses under abominable operational environment, stability, sensitivity, security and the service life of this type of voltage regulator have been improved.

Description

Self-balancing gas pressure regulator

Technical Field

The utility model relates to a gas engineering technical field's voltage regulator, especially a self-balancing gas pressure voltage regulator with diaphragm link gear and pressure signal feedback mechanism.

Background

Pressure regulators are generally installed on main pipelines of gas pipeline systems of industrial boilers, oil field heating furnaces, civil gas boilers, cooking utensils and the like. The pressure regulators can not only adjust the gas flow, but also realize gas cut-off in emergency. However, in the prior art, the related pressure regulators are poor in stability and accuracy and short in service life, and manufacturers in related fields in China do not have reliable and safe pressure regulators.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a self-balancing gas pressure voltage regulator, under abominable operational environment, can improve stability, sensitivity, security and the service life of this type voltage regulator.

The utility model is realized by the following technical proposal, the utility model comprises a valve shell, a diaphragm linkage mechanism, a self-balancing mechanism and a pressure signal feedback mechanism; the valve shell comprises an upper shell, a lower shell and a valve body, wherein the top of the lower shell is connected with the bottom of the upper shell, and the bottom of the lower shell is connected with the top of the valve body; the diaphragm linkage mechanism comprises a safety diaphragm, a working diaphragm, a compensation diaphragm and a diaphragm disc, wherein the diaphragm disc is arranged between the upper shell and the lower shell, the upper end and the lower end of the diaphragm disc are respectively and tightly connected with the safety diaphragm and the working diaphragm, the edge parts of the safety diaphragm and the working diaphragm are all arranged at the joint between the upper shell and the lower shell, and the edge part of the compensation diaphragm is arranged at the joint between the lower shell and the valve body; the self-balancing mechanism comprises an adjusting mechanism, a spring seat, a lower valve core assembly, a middle valve core assembly, an upper valve core assembly and a base, wherein the adjusting mechanism is installed at the top of the upper shell, the spring seat is fixed with the membrane disc, the upper end of the spring is connected with the adjusting mechanism, the lower end of the spring is fixed on the spring seat, the upper end and the lower end of the middle valve core assembly are respectively connected with the lower end part of the upper valve core assembly and the upper end part of the lower valve core assembly, the upper end part of the upper valve core assembly is connected with the membrane disc, a compensation membrane is embedded between the middle valve core assembly and the upper valve core assembly, the base is installed at the bottom of the valve body, the lower end part of the lower valve core assembly is matched with the base, and the valve core assembly divides the valve body into a valve front space and a valve rear space; the pressure signal feedback mechanism comprises a pressure balance pipe, the pressure balance pipe is installed on the valve body, the lower port of the pressure balance pipe is arranged in the space behind the valve of the valve body, and the upper port of the pressure balance pipe is arranged in the membrane space surrounded by the working membrane and the safety membrane.

Further, the utility model discloses still include the rubber pad, the rubber pad is inlayed between lower part case subassembly, middle part case subassembly, and the rubber pad satisfies the toper line contact with the valve body, guarantees sealed reliability.

Further, the utility model discloses still include the pressure cell before the valve, pressure cell arranges left surface, the right flank in space before the valve respectively before the valve for survey gas inlet pressure value.

Furthermore, the utility model discloses still include pressure cell behind the valve, pressure cell arranges left surface, the right flank in space behind the valve respectively behind the valve for survey gas outlet pressure value.

Furthermore, the utility model discloses still include the breathing cap, the breathing cap is installed at last casing middle part to be linked together with the upper portion space of rupture disk. The function is to stabilize the outlet pressure without affecting the performance of the gas pressure regulator, prevent the occurrence of surge and achieve the purpose of improving the use performance of the gas pressure regulator.

Further, the utility model discloses well pressure balance pipe is L type structure, and the signal sample connection position of pressure balance pipe is arranged in the space and is close the exit of voltage regulator behind the valve, has avoided unstable pressure signal region, makes that the pressure regulating response speed is fast, the operation is more stable, the pressure regulating is more accurate.

Compared with the prior art, the utility model discloses following beneficial effect does has: in order to solve the problems of stability and accuracy of pressure regulation and prolong the service life, a safety film and a compensation film are additionally arranged on the basis of arranging a working film; the position of the signal sampling port of the pressure balance tube avoids an unstable pressure signal area, so that the pressure regulating response speed is high, the operation is more stable, and the pressure regulation is more accurate; the installation of the breathing cap ensures that the outlet pressure is stable, prevents the occurrence of panting and achieves the aim of improving the service performance of the gas pressure regulator; the service life is long and is superior to domestic similar products; corrosion resistant material, be fit for various operating modes, not influenced by the medium.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the upper end of FIG. 1;

FIG. 3 is an enlarged partial view of the right middle portion of FIG. 1;

FIG. 4 is an enlarged view of a portion of the right lower end of FIG. 1;

FIG. 5 is a partial enlarged view of the left middle portion of FIG. 1;

FIG. 6 is a partial enlarged view of the left lower end of FIG. 1;

reference numbers in the figures: 1. adjusting mechanism, 2, spring, 3, upper housing, 4, breathing cap, 5, spring seat, 6, rupture disk, 7, screw, 8, working membrane, 9, compensation membrane, 10, pressure measurement hole before the valve, 11, valve body, 12, base, 13, lower part case subassembly, 14, rubber pad, 15, middle part case subassembly, 16, pressure measurement hole after the valve, 17, upper part case subassembly, 18, pressure balance pipe, 19, lock nut, 20, diaphragm disc, 21, lower housing.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.

Examples

The utility model discloses as shown in fig. 1 to 6 above, the utility model discloses an adjustment mechanism 1, spring 2, upper housing 3, respiratory cap 4, spring holder 5, rupture disk 6, screw 7, working film 8, compensation film 9, pressure measurement hole 10 before the valve, valve body 11, base 12, lower part case subassembly 13, rubber pad 14, middle part case subassembly 15, pressure measurement hole 16 after the valve, upper portion case subassembly 17, pressure balance pipe 18, lock nut 19, diaphragm disc 20, lower casing 21, upper housing 3, lower casing 21, valve body 11 constitute the valve casing, the top of lower casing 21 links together through screw 7 with the bottom of upper housing 3, the bottom of lower casing 21 links together with the top of valve body 11, the case subassembly divide into valve front space and valve rear space to valve body 11; the gas flows in from the space before the valve and flows out from the space after the valve. The safety membrane 6, the working membrane 8, the compensation membrane 9 and the membrane disc 20 form a membrane linkage mechanism, the membrane disc 20 is arranged in an inner space enclosed by the upper shell 3 and the lower shell 21, the upper end and the lower end of the membrane disc 20 are respectively and tightly connected with the safety membrane 6 and the working membrane 8, and the edge parts of the safety membrane 6 and the working membrane 8 are uniformly arranged at the joint between the upper shell 3 and the lower shell 21; the middle part of the compensation film 9 is embedded between the middle valve core assembly 15 and the upper valve core assembly 17, and the edge part of the compensation film 9 is arranged at the joint between the lower shell 21 and the valve body 11. The adjusting mechanism 1, the spring 2, the spring seat 5, the lower valve core assembly 13, the middle valve core assembly 15, the upper valve core assembly 17 and the base 12 form a self-balancing mechanism, the adjusting mechanism 1 is installed at the top of the upper shell 3, the spring seat 5 is fixed with the membrane disc 20, the upper end of the spring 2 is connected with the middle part of the adjusting mechanism 1, the lower end of the spring 2 is fixed on the spring seat 5, the upper end and the lower end of the middle valve core assembly 15 are respectively connected with the lower end part of the upper valve core assembly 17 and the upper end part of the lower valve core assembly 13, the upper end part of the upper valve core assembly 17 is connected with the membrane disc 20, the base 12 is installed at the bottom of the valve body 11, and a partition plate extending out of the lower end part of the lower valve core assembly 13 is matched with a groove in the middle part of the base 12; the rubber pad 14 is embedded between the lower valve core assembly 13 and the middle valve core assembly 15, and the rubber pad 14 and the valve body meet the conical line contact. The pressure balance pipe 18 is installed on the valve body 11, the lower port of the pressure balance pipe 18 is arranged in the valve rear space of the valve body 11, the upper port of the pressure balance pipe 18 is arranged in the membrane space surrounded by the working membrane 8 and the safety membrane 6, the pressure balance pipe 18 is of an L-shaped structure, and the position of a signal sampling port of the pressure balance pipe 18 is arranged in the valve rear space and close to the outlet of the pressure regulator. The valve front pressure measuring holes 10 are respectively arranged on the left side surface and the right side surface of the valve front space, and the valve rear pressure measuring holes 16 are respectively arranged on the left side surface and the right side surface of the valve rear space. The respiratory cap 4 is installed at the middle of the upper case 3 and communicates with the upper space of the safety diaphragm 6. Under the action of the breathing cap 4, the pressure in the upper space of the safety diaphragm 6 is relatively stable.

The utility model discloses an in the implementation, spring holder 5, membrane dish 20, upper portion case subassembly 17, middle part case subassembly 15, lower part case subassembly 13 link together, can reciprocate in the valve case in step. When the pressure below the working film 8 is increased, the spring 2 is compressed when the pressure is synchronously moved upwards, and the throat area of the pressure regulator is reduced; when the pressure below the working film 8 is reduced and moves downwards synchronously under the elastic force of the spring 2, the throat area of the pressure regulator is increased.

The operation of the operating diaphragm 8 is conducted to the lower spool assembly 13 by the upper spool assembly 17 and the middle spool assembly 15, thereby controlling the area of the regulator throat. The valve body outlet pressure acts on the working membrane 8 by means of the pressure-equalizing tube 18, with the resulting force opposing the force of the spring 2. The gas pressure of the working membrane 8 will tend to close the regulator valve and the spring 2 pressure will tend to open the regulator valve (failure will open). When there is no gas, the spring 2 opens the valve of the regulator completely; when the gas is over-pressurized, the valve of the pressure regulator is completely closed.

A rubber gasket 14 is embedded between the middle valve core assembly 15 and the lower valve core assembly 13 to ensure complete sealing. When the opposing action of the force of the spring 2 and the outlet pressure are balanced, the working membrane 8, the upper spool assembly 17, the middle spool assembly 15, and the lower spool assembly 13 are relatively kept stationary, and the outlet pressure conforms to the set point of the spring 2. As the flow demand increases, the outlet pressure drops, the action of the spring 2 is greater than the outlet pressure action, and the valve opens until the outlet set pressure is restored. When the outlet pressure increases, the process is reversed.

The utility model discloses in, can adjust the pretightning force of spring 2 through adjustment mechanism 1 to can adapt to different gas pipelines.

The specific operation of the present invention has been described above. It is to be understood that the present invention is not limited to the specific operation described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the essential scope of the present invention.

Claims

1. A self-balancing gas pressure regulator is characterized by comprising a valve shell, a diaphragm linkage mechanism, a self-balancing mechanism and a pressure signal feedback mechanism;

the valve shell comprises an upper shell, a lower shell and a valve body, wherein the top of the lower shell is connected with the bottom of the upper shell, and the bottom of the lower shell is connected with the top of the valve body;

the diaphragm linkage mechanism comprises a safety diaphragm, a working diaphragm, a compensation diaphragm and a diaphragm disc, the diaphragm disc is arranged between the upper shell and the lower shell, the upper end and the lower end of the diaphragm disc are respectively and tightly connected with the safety diaphragm and the working diaphragm, the edge parts of the safety diaphragm and the working diaphragm are all arranged at the joint between the upper shell and the lower shell, and the edge part of the compensation diaphragm is arranged at the joint between the lower shell and the valve body;

the self-balancing mechanism comprises an adjusting mechanism, a spring seat, a lower valve core assembly, a middle valve core assembly, an upper valve core assembly and a base, wherein the adjusting mechanism is installed at the top of the upper shell, the spring seat is fixed with the membrane disc, the upper end of the spring is connected with the adjusting mechanism, the lower end of the spring is fixed on the spring seat, the upper end and the lower end of the middle valve core assembly are respectively connected with the lower end part of the upper valve core assembly and the upper end part of the lower valve core assembly, the upper end part of the upper valve core assembly is connected with the membrane disc, a compensation membrane is embedded between the middle valve core assembly and the upper valve core assembly, the base is installed at the bottom of the valve body, the lower end part of the lower valve core assembly is matched with the base, and the valve core assembly divides the valve body into a valve front space and a valve rear space;

the pressure signal feedback mechanism comprises a pressure balance pipe, the pressure balance pipe is installed on the valve body, the lower port of the pressure balance pipe is arranged in the space behind the valve of the valve body, and the upper port of the pressure balance pipe is arranged in the membrane space surrounded by the working membrane and the safety membrane.

2. The self-balancing gas pressure regulator according to claim 1, further comprising a rubber pad embedded between the lower valve core assembly and the middle valve core assembly, the rubber pad meeting the tapered line contact with the valve body.

3. The self-balancing gas pressure regulator according to claim 2, further comprising a front valve pressure measuring hole disposed on the left side and the right side of the front valve space, respectively.

4. The self-balancing gas pressure regulator according to claim 3, further comprising a rear valve pressure measuring hole, the rear valve pressure measuring hole being disposed on a left side and a right side of the rear valve space, respectively.

5. The self-balancing gas pressure regulator according to claim 4, further comprising a breathing cap installed in the middle of the upper housing and communicating with the upper space of the safety diaphragm.

6. The self-balancing gas pressure regulator according to claim 1, wherein said pressure-balancing tube is of L-shaped configuration, and the signal sampling port of the pressure-balancing tube is positioned in the post-valve space and near the outlet of the pressure regulator.